The Intercept is nowhere near left-libertarian. Left-libertarianism is a strand of socialism (you'll find left libertarians spanning from anarchists and communists/libertarian Marxists to more moderate socialists), and the origin of libertarianism.

Here is the first left-libertarian, and anarch-communist criticising Proudhon for being just a moderate anarcist and liberal, rather than libertarian, and segueing into a rant against property rights:

https://theanarchistlibrary.org/library/joseph-dejacque-on-t...